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White-label client portal for small agencies: every client gets a branded space, installable like an app, with project progress, files, approvals and messages.

Mainstack enables entrepreneurs with commerce and global payment solutions to showcase and get paid for their work and services, grow revenue, and manage customers - all in one place.

Website, pricing, platforms and company facts side by side.
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| Website | xtablo.com | mainstack.com |
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| Company | Startup from France · 1 - 9 employees | — |
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In their own words, as submitted to SaaSHub.


XTablo is a white-label client portal built for small agencies (2 to 7 people) in marketing, web, design and communication. Every client gets their own space with the agency's logo and colors, installable on their phone like an app. In one place, clients see: Project progress: steps, tasks and...
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As answered by people managing XTablo and Mainstack.co.
XTablo's answer
XTablo's answer
We spent months listening to agency owners describe the same paradox: a premium brand in substance, but not in form.
A client never sees your talent first. They see what you share with them: a messy Drive, an unfinished Notion page, a WhatsApp thread full of reminders and lost attachments. And the team lives the same mess from the inside: files here, chats there, tasks everywhere, no clear view of ongoing projects.
So we built XTablo to bring both sides of the job into one tool. Studio is the agency's back office (projects, tasks, planning, files, discussions). Portal is the client side: a space with the agency's logo and colors where each client follows their project, approves, chats and drops files. A task checked in the Studio moves the step forward in the Portal. No double entry.
We started with a rough MVP, ran call after call with agencies, iterated, then shipped a complete v1 with a new design. When the first agencies started paying, the question changed from "does it work?" to "how do we grow what works?".
Today agencies can even drive XTablo from Claude through MCP: write one sentence, and the project, steps and tasks appear in the client portal.
XTablo's answer
XTablo is built only for agencies, not for every kind of business. Each client gets a portal with the agency's brand that installs on their phone like an app, so clients actually come back to it instead of digging through emails.
XTablo's answer
Small marketing, web, design and communication agencies (2 to 7 people) and freelancers who manage several clients and want to stop chasing them across email, WhatsApp and shared drives.
XTablo's answer
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